Cooling chamber



w. R. BENDY COOLING CHAMBER Oct. 8, 1929.

Filed July l9, 1927 orrzgy Patented Oct. 8, 1929 UNITED STATES WILFRED R. IBENDY, OF CHICAGO, ILLINOIS' COOLING CHAMBER Application filed July 19,

My invention relates to improvements in cooling chambers especially adapted for use in cement factories for cooling hot Portland cement clinker as it leaves the kiln, the main object of the invention being the provision of a simple and efficient construction of this character.

Another object of the invention is the provision of an attachment for existing cooling cylinders for increasing their cooling capac ity.

Another object of the invention is the provision of a construction whereby the capacity of a cooler of this character may be greatly increased and thereby the size of a cooler of a given capacity may be greatly reduced.

Another object of the invention is the provision of means whereby air entering the cooling chamber is heated as it enters the same.

Another object of the invention is to provide means whereby the cooling of cement clinker occurs partially outside of the cooling chamber, thereby relieving said chamber of the necessity of withstanding the heat thus removed.

Another object of the invention is the provision of a cooler, as above indicated, operating without moving arts or machinery.

Another object of t e invention is to lift, drop and scatter the clinker inside of the coolor through the major portion of the revolution of each lifting element, thereby prolonging and distributing the cooling action and greatly aiding the same.

Another object of the invention is the provision of means whereby air admitted to the cooler is compelled to pass in intimate contact with the hot material.

Another object of the invention is to provide means whereby the material may be lifted and scattered at a point in the cooler where the heatordinarily prevents the use of the usual steel lifter bars and shelves.

Another object of the inventionis to provide means for admitting the air as outlined above at the same time preventing the egress of the material treated.

Another object of the invention is to provide a construction and arrangement by means of which each supplemental.individual 1927. Serial No. 207,007.

cooling elementis itself cooled individually to prevent overheating thereof.

In general the objects of the invention are attained by providing pockets applied to the periphery of the upper portion of an ordinary revolving cooling chamber, said pockets being adapted and arranged to receive the heated material, thereby exposing it to the cool ing action of an external atmosphere, then lifting said material and gradually discharging it through gravity into said cooling chamber, thereby prolonging the time during which said material is exposed to the outside atmosphere and also prolonging the time during which said material is permitted to fall 5 through the cooling draft of air in the cooling chamber.

The pockets are so designed and arranged as to admit air to the cooling chamber, said air thereby cooling the material and the pockets and also being'itself heated as it entors the cooling chamber.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming apart of this specification and in which i Fig. l is a side view, shown partially in section, of a cooling chamber embodying the invention;

Fig. 2 an enlarged transverse section taken substantially on line 22 of F iig. 1; and v Fig. 3 a sectional perspective view of one of 35 the cooling pockets detached. i

The preferred form of construction, as illustrated in the drawings, comprises a revolving cooling chamber set, as indicated, at a slight inclination to the horizontal and dias vided into an upper portion 10 and a lower portion 11, as indicated. The cooling chamer 10 and 11 is made of an outer metallic shell, as indicated, and is provided near each end with bearing rings or collars 12 mounted upon grooved rollers 13 upon suitable abutments 14, said rollers and abutments being set to 'supportsaid cooling chamber in inclined position and permit of free revolution thereof. 109

The cooling chamber is provided centrally with an annular gear 15 meshing with a pinion 16 on a drive shaft 17 and by means of which the cooling chamber is slowly rotated. At its upper end the cooling chamber projects, as shown, into a chamber 18 in and through which the hot cement clinker is fed into the upper end of the coo chamber in the usual way. The lower 1 of the cooling chamber is arranged over a 1: discharges into a dischar 'e hopper l9, and the usual lining 20 of refractory material such as fire brick, is provider. for the upper portion 10 of the cooling chamber. The lower portion 11 of the chamber is also provided with the usual lifting or scattering bars 21.

So much of the cooling chamber already been described is the usual arrangement for the purpose, operating in the usual way in cement factories for cooling the hot clinker from the kilns and constitu es no part of my present invention except in so far as the same co-operates with the to be presently described.

Arranged in the periphery of the portion 10 of the cooling chamber, is rality of radial openings 22, each opening being lined and protected by a heavy casting 23 having an outer securing flange 2% resting against theouter shell of the chamber. A. cooling pocket 25 is arranged on the periphery of the chamber part 10 over each of the openings 22, as shown. Each of the said pockets 25 consists of a heavy casting in the form indicated, with an opening 26 at its inner end registering with the corresponding opening 22. Each pocket is provided with a perforated securing flange 27 lying over-the corresponding flange 24, and common bolts are employed as shown for securing said flanges in place.

The cooling chamber is caused to rotate in the direction of the arrow in Fig. 2 and with reference to such direction of rotation the forward side of each cooling pocket is arranged to extend radially, as shown from the periphery of the cooling chamber. The rear side of each pocket is provided with a rearwardly extending recess 28 having an abru at inner shoulder 29 and an inclined outer shoulder 30. Each pocket is also provided at its outer end with an open goose-' neck trap arranged shown with a passage 31 extending forwardly from the outer end of the pocket and then curving inwardly and rearwardly at 32 to form a trap which will admit air to the outer end of each pocket, but will prevent egress of the material being treated, as shown.

In operation. the material to be treatel, such as the hot clinker from a cement kiln, is le in the usual way into the upper end of the cooling chamber 10 and progresses slowly therethrough as said chamber revolves in the usual way, being discharged in cooled condition into the discharge hopper 19.

As will be noted from Fig. 2 of the drawings, during the revolution, the pockets will receive material as they pass across the bottom of the chamber, elevate said material and gradually discharge the same as they revolve, the lateral recess 28 at each pocket retaining said material for the major portion of the revolution, as indicated, and thus gradually dischargin and distributing the material throughout the revolution. it will also be noted that air will be admitted to the outer end of each pocket, said ai thus passing in intimate contact with the material in the pockets serving to cool both the pockets and the material and also itself being heated prior to introduction into the cooling chamher and the kiln proper. The constructicii set forth will be found. to be a simple and eliicient one for the purpose attaining the objects outlined above in a simple and ellicient manner and without use of moving parts or machinery.

ll hile l have illustrated and described the preferred form of construction for carrying my invention into etlect this is capable of variation and modification without departing from the spirit of the invention. 1, therefore, do not wish to be limited to the precise details disclosed but desire to avail myself of such variations and modifications as fall within the scope of the appended claims.

I claim:

1. A construction of the class described comprising a revolving chamber; and one or more material receiving pockets exposed to the outside air on all sides projecting outwardly from and opening through the periphery thereof and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber to efiect a cooling of said material.

2. A construction of the class described comprising a revolving chamber; one or more material receiving pockets exposed to the outs do air on all sides projecting outwardly r rom and opening through the periphery tuereot and adapted and arranged to receive material from said chamber at a low point and elevateand discharge said material into said chamber; and means tor admittin air to said pockets but preventing flow of solid material therefrom to eilect a cooling of said material.

A construction of the class described comprising a revolving chamber; one or more material receiving pockets exposed to the outside air on all sides projecting outwardly from and opening through the periphery thereof and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber; and an open trap for admitting air to said pockets but preventing flow of solid material therefrom to ef feet a cooling of said material.

4-. A construction of the class described comprising a revolving chamber; one or more material receiving pockets exposed to the outside air on all sides projecting outwardly from and opening through the periphery thereof and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber; and a goose-neck open trap for admitting air to said pockets but preventing flow of solid material therefrom to effect cooling thereof.

5. A construction of the class described comprising a revolving chamber: one or more material receiving pockets projecting outwardly from and opening through the periphery thereof and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber; and a goose-neck open trap having an air passage extending from the outer end of each pocket first forwardly and then curving inwardly and rearwardly therefrom for admitting air to said pockets but preventing flow of solid material therefrom to effect a cooling of said material.

6. A construction of the class described comprising a revolving chamber; one or more material receiving pockets projecting outwardly from and opening through the periphery thereof and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber; and a goose-neck open trap having an air passage extending from the outer end of each pocket first forwardly and then curving inwardly and rearwardly therefrom for admitting air to said pockets but preventing flow of solid material therefrom, there being also a lateral extension on the rear side of each pocket adapted to receive and carry material during the major portion of the revolution of each pocket to effect a cooling of said material.

7. A construction of the class described comprising a revolving chamber set at an inclination to the horizontal and consisting of an upper and a lower part; a lining of refractory material for the upper part of said chamber; lifting and agitating bars on the inner periphery of the lower portion of said chamber; one or more material receiving pockets projecting outwardly from and opening through the periphery of the upper portion of said chamber and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber; and a gooseneck open trap having an air passage extending from the outer end of each pocket first forwardly and then curving inwardly and rear-, wardly therefrom, the forward wall of each pocket extending substantially radially and the rear wall of each pocket being provided with a rearwardly extending recess having an abruptshoulder at its inner end and an inclined shoulder at its outer end leading gently and gradually to the corresponding goose-neck trap to effect a cooling of said material.

'8.- A construction of the class described comprising a revolving chamber having a refractory lining, one or more material receiving pockets exposed to the outside air on all sides projecting outwardly from and opening through the periphery thereof and adapted and arranged to receive material from said chamber at a low point and elevate and discharge said material into said chamber to effect a cooling of said material.

In testimony whereof I aliix my signature at 10 South LaSalle Street, Chicago, Illinois.

WILFRED R. BENDY. 

